Parameter

Usage

GeoSparkSQL supports many parameters. To change their values,

1. Set it through SparkConf:

   sparkSession = SparkSession.builder().
         config("spark.serializer",classOf[KryoSerializer].getName).
         config("spark.kryo.registrator", classOf[GeoSparkKryoRegistrator].getName).
         config("geospark.global.index","true")
         master("local[*]").appName("myGeoSparkSQLdemo").getOrCreate()
   

2. Check your current GeoSparkSQL configuration:

   val geosparkConf = new GeoSparkConf(sparkSession.sparkContext.getConf)
   println(geosparkConf)
   

Explanation

• geospark.global.index
  • Use spatial index (currently, only supports in SQL range join and SQL distance join)
  • Default: true
  • Possible values: true, false
• geospark.global.indextype
  • Spatial index type, only valid when "geospark.global.index" is true
  • Default: rtree
  • Possible values: rtree, quadtree
• geospark.join.gridtype
  • Spatial partitioning grid type for join query
  • Default: quadtree
  • Possible values: quadtree, kdbtree, rtree, voronoi
• geospark.join.numpartition (Advanced users only!)
  • Number of partitions for both sides in a join query
  • Default: -1, which means use the existing partitions
  • Possible values: any integers
• geospark.join.indexbuildside (Advanced users only!)
  • The side which GeoSpark builds spatial indices on
  • Default: left
  • Possible values: left, right
• geospark.join.spatitionside (Advanced users only!)
  • The dominant side in spatial partitioning stage
  • Default: left
  • Possible values: left, right

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Last update: September 15, 2020 23:40:05